feature: Alternating background in rendered table rows

Is your feature request related to a problem? Please describe.

I'm loving the plugin overall and the only missing part for me is that table rows are a little hard to visually parse for me

Describe the solution you'd like

I know that adding horizontal lines between rows is not acceptable https://github.com/MeanderingProgrammer/render-markdown.nvim/issues/295 but as an alternative I'd like to propose ability to set alternating background color for the table rows.

I'd be willing to try to implement this feature with minimal guidance where should I look in the code.

Describe alternatives you've considered

currently I'm rendering the markdown in the browser when looking into the tables which is not ideal ;)

Additional information

No response

首先定位负责渲染表格行的代码，以及表格现有的配置或高亮处理。检查如何根据行的位置确定其背景，并找出任何相关测试。当用户可以配置交替的行背景而无需添加水平线时，即表示完成。